Biospira has been discontinued in my market (NE Ohio). The guy at the LFS said that Marine Land is going to re-introduce it in the "future." Weird. Anyways, I am using pure ammonia from the grocery store for my fishless cycle. Make sure it is PURE ammonia with no colorants, surfacants (spelling?), dyes, perfumes, etc. If the ingredients say "ammonium hydrodixe" and that only, you should be fine. Mine actually says "water and ammonium hydroxide" which I am assuming means that it is simply diluted. Oh, and in conjunction with the ammonia, I add the "bacteria in a bottle" stuff.. I don't know if it works, but maybe, just maybe it will make the cycle go faster. Hope this helps!
Mike